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A. RYDQUIST.

PRESSURE OPERATED PUMP CONTROLLING MECHANISM. APPLICATXON FILED DEC.26, m4.

'1 ,3 503 v Patented July 22, 1919.

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li'fiiasses INVENTOR mm QW- i a; ATTORNEYS THE COLUMBIA PLANOGRAPH 60-. WASHINGTON, D. c.

ADOLPH RYDQUIST, OF ROCHESTER, NEW YORK.

PRESSURE-OPERATED PUMP-CONTROLLING MECHANISM.

Specification of Letters Patent.

Patented July 22, 19 19.

Application filed December 26, 1914. Serial No. 879,054.

To all'whom it may concern:

Be it known that I, ADoLPH RYD UIsT, of

Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Pressure-- Operated Pump-Controlling Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanywhich the operation of the pump is automatically governed by fluid pressure, variations in pressure serving toalternately start and stop the pump. This is generally effected through the instrumentality of an electric motor with provision for making and breaking the motor circuit in accordance with pressure variations, and a chief purpose of the construction is to provide a combination of parts that will serve efficiently to automatically open and close the motor circuit, by means which insures a positive and instantaneous engagement or separation of the controlling contacts in the motor circuit. A further feature of the improvement resides in providing a novel arrangement whereby adjustment may be had between certain parts of the mechanism in order to vary the pressure effect that is to say, the point at which a certain pressure causes a predetermined operation. To'these and other ends the invention consists in certain improvements and combinations of parts all as will be hereinafter more fully. described, the novelfeatures being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a sectional elevation of an apparatus embodying one form of my invention' Fig. 2 is a sectional view on the line 2 2 of Fig. 1;

Fig. 3 is a side elevation, partially in section, showing the circuit controlling contacts and the actuating" mechanism for the same, the parts appearing with the contacts separated;

Fig. 4 is a similar view showing the posi; tion of the parts with the contacts in engagement, closing the motor circuit;

Fig. 5 is a view similar to Fig. 4, cmbodying a slightly modified form of construction and illustrating the position of the}l parts with the contacts in engagement, an

Fig. 6 is an elevation of the construction shown in Fig. 5, the parts appearing in the position which they assume immediately prior to releasing the contact member.

Similar reference characters throughout the several views indicate the same parts.

In the form of construction illustrated herein, there is included a base portion 1 upon which is mounted a lower cylinder 2, and a plurality of standards 3 supporting an upper cylinder not shown,- said cylinders being provided with suitable outlet valves 5 communicating with a discharge pipe 7 which leads to any suitable storage chamber.

The motor is driven from a suitable source of electric power,forming no part of my invention, and therefore, I have deemed it unnecessary to show the principal motor circuit. The motor is also included in and governed by a supplemental circuit including connections 28 and 29 which lead to the stationary and movable contacts 30 and 31 respectively so that by separating these contacts the motor circuit is broken and the operation of the pump stopped. This relative movement between the contacts is brought about by variations in the pressure created by the operation of the pump, in the manner which will now be described.

The outlet pipe 7 leads to a chamber 33 from which the pipe 34; connects with the diaphragm chamber 35, as well as with an indicator 36 which may be of any convenient form. Arranged within the diaphragm chamber 35 is the diaphragm 37 which is actuated by the pressure within the chamber and changes its position in accordance with the variations of pressure. Resting upon the diaphragm 37 is the pressure actuated controlling member comprising a plate 38 which carries a vertically projecting stem 39 that is movable within the housing 40. Mounted on the upper end of the stem 39 is a ball 41 which is engaged by a portion of the lever 42, the latter carrying a pivotal bearing 43 which is ad-' contact member including a rod 47, which justable in a manner that will be presently described.

The lever 42 is arranged so that its long arm coeperates with a yoke 44 forming part of a retaining device 45 which pivots on a bearing 46. The retaining member just referred to cooperates with the movable contact already mentioned and designated at 31, the operation being suchthat when the retaining device is moved out'of retaining relation with the contact, the latter is thrown quickly either into or out of engagement with the stationary contact, depending upon its previous position.

The movable contact 31 is carried by a 7 an opening 55 of the retaining device and movablelaterally with relation to the latter. Disposed between the guide 54 and the arms 51 and 52 are a pair of springs 56 and 57 which are compressed when the retaining device is rocked on its'pivotal released by the retaining device.

axis, and serve to store up sulficient power to actuate the contact member when it is Assuming the parts to be in the position of Fig.

4, it will be observed that the initial upward I movement of the yoke 44 will compress the spring 57 while in the final portion of the upward movement of the yoke 44, the locking portion j 49 will move longitudinally beyond the cam 50 so as to release the contact member. The latter is impelled'upwardly by the action of thespring 57, causing the contact 31 to be moved away from the contact 30, and thus opening the motor circuit. A reduction inpressure causes the retaining device to move in the opposite direction to a normal position as'shown in Fig. 3, and a further reduction will effect an operation the reverse of what has just been described, whereby the motor circuit is closed and the pump again brought into operation.

The frame 47 is movable on the rod 47, the latter being provided at its upper end with a pin 58 which limits the upward movement of the frame 47 The latter is also provided with a slot 59 which engages the bearing 46 to limit the movement of the contact member in opposite directions. 60 designates a spring arranged between the frame 47* and a shoulder 61 fixed upon the for imparting a positive downward movement to the movable contact until it engages the stationary contact 30, after which the movement of the portion 47 a is cushioned by the spring 60. r I V In Figs. 5 and 6 is shown a slightly modified construction in which the vertically movable rod 61 carries a movable frame 62, forming the contact member carrying the movable contact. The frame 62 is provided with an arm 63 having an opening therein which forms a guide for a rod 64, the latter being pivotally supported on'the retaining device 65. The rod 64 carries a head 66 and arranged on the rod 64 are springs 67 and 68 disposed between the arm 63 and the upper and lower endsof the rod 64. 69 is the locking portion on the retaining device 65, operating alternately to engage opposite sides of a;

cam 70 on the contact member. The operation withthis form is substantially the same as with that already described. When the lever 42 is operatedby a change in pressure,

it rocks theretaining device on its axis compressing one or the other of the springs 67 and 68, until the retaining portion '69 is moved laterally far enough todisengagethc cam 70, whereupon the contact member is thrown upwardly or downwardly according to the spring which has previously been.

placed under compression.

In order to adjust the mechanism forvarying pressures, prov1s1on is made for:

changing the relation of the lever 42 with respect to its controlling mechanism. To this end, the said lever is movable longitudinally of itsaxis within the housing 40 so as to change the position of the bearing on which it pivots. Thesaid bearing, designated at 43 is engaged at one end by the slotted portion 71' of the plate 72. The latter is rotatable in order to cause the cam slot 71 to vary the position of the bearing 43 and said plate 72 may be held in any adjusted posi tion by suitable means. Further adjustment of the lever 42 may be had by means of a spring 73 which connects the base portion 1 and the lever, the upper end of said spring being arranged to engage any one of a series of notches 74 formed in the lever 42.

I'claim as my invention: 1. In an electric circuit closer for controlling a pressure pump, the combination of a stationary contact, a movable contact cooperating therewith, means for moving ,said movable contact into and out of enated retaining device, and means on said 7 retaining device cotiperating with said cam to control the movements of said movable contact member.

2-. In an electric circuit closer for controlling a pressure pump, the combination of a stationary contact, a movable contact coopcrating therewith, means for moving said movable contact into and out of engagement with said stationary contact, a slidable rod on which said movable contact is carried, a frame having limited movement on said rod, means cooperating with said frame for actuating said movable contact, a pivoted retaining device, means on said device for locking said movable contact in and out of engagement with the stationary contact, and a pres sure operated lever for controlling the movements of said retaining device.

3. In an electric circuit closer, the combination of a stationar contact, a movable contact cooperating t erewith, a, retaining device for controlling the movements of said movable contact, a pressure operated lever for actuating said retaining device and rotatable means for adjusting the fulcrum of said lever to change the relative length of its arms. 7

4. In an electric circuit closer, the combination of a chamber having a diaphragm, a pressure operated member in contact with said diaphragm, a lever having an arm in contact with said member and movable thereby, means for adjusting the lever to vary its point of contact With the pressure operated member, a pivoted retaining device operatively connected with said lever, and a movable switch contact controlled by said retaining device.

ADOLPH RYDQUIST. Witnesses:

H. E. STONEBRAKER, N. GERTRUDE WEEKS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

